Rollei Pro Square Filter Hard Nano IR GND4 (0.6) für 150mm

Profi Hard GND Filter

The Rollei Profi Hard GND Filter is a rectangular-shaped grey graduated filter with a hard gradient, suitable for the Pro Filter holder sets from Lee, Nisi, Cokin, Haida and Rollei, of course. A GND filter is an ND Filter that rapidly becomes transparent from the centre outwards with a short transition to the lower end. The upper half of the image is darkened.

High-quality glass processing

To obtain excellent photo quality, your photo equipment must, of course, be of high quality. This is why our Rollei Profi Rectangular Filters are made of real glass and processed to a high standard. The filters are made of fine, annealed H-K9L optical glass and are multiple-coated on both sides.

Because of the high-quality processing of the glass, these four quality features of Rollei Photo Filters are guaranteed and set new industry standards among the commonly used ND sets:

High colour fidelity

Low reflection

HD optical glass

Nano-tempering

High colour fidelity for your photos

Rollei Profi Filters have no colour distortion that is perceptible to the naked eye, and Rollei Profi Filters have no colour casts. This has been confirmed in independent testing by Chip magazine and experienced by professional photographers who usually work with filter systems from Lee, Nisi, Cokin or Haida.

Rollei Profi Filters have a (graduated) coating that uniformly lets in light (from ultraviolet almost up to infrared) through the filter. Unlike plastic resin filters and laminated filters, whose colour fades over time and whose bonding can easily come apart, the glass in Rollei Filters is extremely durable and does not fade.

If the light obscuration does not cover the whole spectrum of visible light, colour faults appear. With cameras, the visible light lies between 420 nm ~ 680 nm. The flat spectrum curve means that the light attenuation rate is relatively high and thus less visible light penetrates the filter. If light can penetrate the filter uniformly there are no colour casts. Rollei Filters meet this important requirement.

Hard GDN Filter – Versions and Sizes

Rollei Hard GND Filters are available, depending on the width of the filter holder, in versions GND4 and GND8. The number here illustrates the degree of darkening and the number of f stop reductions.

Hard GND Filters are for filter holders from Rollei, Lee, Nisi, Cokin or Haida with widths of 70 mm, 100 mm, 150 mm and 180 mm and are available in up to two different degrees of darkening, depending on the filter-holder width.

Rollei Pro Rectangular Filter Hard Nano IR GND4 (0.6)

Rollei Pro Rectangular Filter Hard Nano IR GND8 (0.9)

70 mm

-

✔

100 mm

✔

✔

150 mm

✔

✔

180 mm

-

✔

✔ = available- = not available

Using Rollei Hard GND Photo Filters

With a Hard GND Filter you have a grey gradient with a hard transition that is to say on a narrow strip in the middle of the filter. This is ideal when the areas are uniformly divided. This prevents over-exposing the sky when photographing a sea horizon. However, it can be used in various ways, so that with the GND filter you can also focus properly on a snow scene without making the evening sky too dark. To do this, you simply invert the filter, for example. Until now, professional photographers have been typically using Hard GND Photo Filters from Lee, Nisi, Cokin or Haida, now Rollei Filters are available, too.

For what lens and holders are they suitable?

For universal use you need to know your lens diameter. The filter holder for 70 mm filters can be used on lenses with a maximum filter thread of 58 mm. With the adaptor rings enclosed, it can also be mounted on 52 mm lenses. Optional adaptor rings extend use to include lenses with filter threads of 40.5 mm, 49 mm and 55 mm.

The 100 mm filter holder can be mounted on lenses with a filter thread of 82 mm to 62 mm. Additional adaptor rings of 62 mm, 67 mm, 72 mm and 77 mm are included with delivery.

These Rollei Pro Filters are fully compatible with holders from Lee, Nisi, Cokin and Haida, all of the filters made by these manufacturers fit perfectly into the Rollei Pro Filter holders as well. The Rollei product philosophy is to always provide maximum flexibility to photographers.

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